Learn to build an Unsplash photo viewer app using SwiftUI and iOS 14 features. Get hands-on experience with Lazy Stacks, iPad sidebars, and adaptive layouts. Start by accessing the Unsplash API and analyzing JSON to create a data model. Progress through project setup, API integration, and implementing Lazy VStack for efficient image listing. Explore Lazy Grid for alternative layouts and add tab bar navigation. Adapt the app's layout based on size classes and incorporate sidebar navigation for iPad and macOS. Conclude with insights on macOS compatibility and receive access to tutorial files for practice.